A modified recycled composite plastic and its preparation method

A composite plastic and recycled plastic technology, applied in the field of polymer materials, can solve the problems affecting the use range and service life, poor mechanical properties of recycled plastic parts, different processing properties, etc., to achieve low interfacial energy, improve mechanical properties, good The effect of the cross-linked structure

Active Publication Date: 2022-04-26
HEFEI GENIUS NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Based on this, the present invention provides a modified recycled composite plastic, using tert-butyl 4-epoxymethyl-3-phenylpiperazine-1-carboxylate as a modifying agent when the recycled composite plastic is recycled and granulated Added to solve the problem of poor mechanical properties of recycled plastic parts caused by poor compatibility and different processing properties of various materials in the prior art, which affects the scope of use and service life of mixed recycled plastics

Method used

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  • A modified recycled composite plastic and its preparation method

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Experimental program
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Effect test

Embodiment 1

[0024] 98.1 parts of the recycled plastic mixture (which contains PP 23.40%, PE 1.27%, ABS73.43%), modifier 4-epoxymethyl-3-phenylpiperazine-1-carboxylate tert-butyl 1.5 parts, 0.2 parts of antioxidant 1010, and 0.2 parts of processing aid calcium stearate were mixed uniformly in a high-mixer to obtain a mixed material;

[0025] Put the mixed material in a twin-screw extruder, and the processing temperature of each section: 250°C for the first zone, 255°C for the second zone, 270°C for the third zone, 270°C for the fourth zone, 270°C for the fifth zone, 270°C for the sixth zone, and 270°C for the seventh zone ℃, 260 ℃ in the eighth zone, 260 ℃ in the ninth zone, melt extrusion under the conditions of screw speed 250r / min, granulation and drying, to prepare modified recycled composite plastics.

Embodiment 2

[0027] 97.45 parts of the recycled plastic mixture (which contains PP 52.52%, ABS 16.43%, PC28.50), modifier 4-epoxymethyl-3-phenylpiperazine-1-carboxylate tert-butyl 2 0.3 part, 1076 parts of antioxidant, 0.25 part of processing aid silicone E5250.25 parts are mixed homogeneously in high mixer, obtain mixed material;

[0028] Put the mixed material in a twin-screw extruder, and the processing temperature of each section: 260°C for the first zone, 270°C for the second zone, 280°C for the third zone, 280°C for the fourth zone, 290°C for the fifth zone, 290°C for the sixth zone, and 280°C for the seventh zone ℃, 270°C in the eighth zone, 270°C in the ninth zone, melt extrusion under the condition of the screw speed of 220r / min, granulate and dry, and prepare the modified recycled composite plastic.

Embodiment 3

[0030] 96.95 parts of the recycled plastic mixture (which contains PP 40.31%, PE 23.78%, PC32.86%), modifier 4-epoxymethyl-3-phenylpiperazine-1-carboxylate tert-butyl 2.5 parts, 0.2 part of antioxidant 1010, 0.2 part of antioxidant 168, and 0.1 part of processing aid zinc stearate were uniformly mixed in a high mixer to obtain a mixed material;

[0031] Put the mixed material in a twin-screw extruder, and the processing temperature of each section: 250°C for the first zone, 255°C for the second zone, 270°C for the third zone, 270°C for the fourth zone, 270°C for the fifth zone, 270°C for the sixth zone, and 270°C for the seventh zone ℃, 260°C in the eighth zone, 260°C in the ninth zone, melt extrusion under the condition of the screw speed of 280r / min, granulate and dry, and prepare the modified recycled composite plastic.

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Abstract

The invention discloses a modified recycled composite plastic and a preparation method thereof. Composition by weight fraction, adding a modifier when recycled composite plastics are reused and granulated, which solves the poor mechanical properties of recycled plastic parts caused by poor compatibility and different processing properties of various materials in the mixed recycled plastics in the prior art, Therefore, the problem of affecting its range of use and service life, the composite material in the present invention has a better cross-linked structure, lower interface energy, and the obtained recycled composite material has excellent mechanical properties.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and in particular relates to a modified recycled composite plastic and a preparation method thereof. Background technique [0002] With the increasingly widespread use of plastics, the disposal of plastic waste has also become the primary problem to be solved at present. The current common disposal methods are incineration or landfill, but incineration and landfill will not only bring serious environmental problems and are regarded as A relatively wasteful way of processing. [0003] At present, the recycling of plastics is regarded as the most environmentally friendly and economical way. However, due to the complexity of the products, generally discarded plastic products are usually composed of a variety of materials, including home appliances, automotive interior and exterior decoration, and electronic and electrical parts. The products are mainly composed of PP, PE, ABS, PC or PC / AB...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L55/02C08L23/12C08L23/06C08L69/00C08L83/04C08K5/134C08K5/098C08K5/3462C08K5/00
CPCC08L55/02C08L23/12C08L69/00C08L2205/03C08L2205/035C08L23/06C08K5/1345C08K5/098C08K5/3462C08L83/04C08K5/526C08K5/00
Inventor 杨桂生计娉婷朱敏廖雄兵
Owner HEFEI GENIUS NEW MATERIALS
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